MAL203038228E3

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Aluminum electrolytic capacitors, commonly known as electrolytic capacitors, are passive components consisting of three parts: anode aluminum foil, electrode separator and electrolyte. They are called electrolytic capacitors because the electric double layer of the oxide film on their anode foil surface works as an electrolyte. The MAL203038228E3 is a representative product of aluminum electrolytic capacitor and is widely used in the electronics industry. This paper aims to elaborate the application field and working principle of the MAL203038228E3.

The MAL203038228E3 is mainly used in power supply, voltage stabilizing, filtering and rectifying circuits in consumer electronic products. Its main applications include power management and DC/DC conversion circuits, switching power supply, electronic UPS power supply and high-voltage LED backlight drive circuits etc. Its working voltage is 16V, the capacitor capacity is 2200uF, and the size is 20.3mm х 38mm х 22.8 mm. It can operate in temperatures from -40℃ to +105℃, and the maximum ripple current rate is 2000M. Therefore, the MAL203038228E3 is reliable and stable.

The working principle of aluminum electrolytic capacitor is based on the electric double layer formed on the oxide film of its anode aluminum foil. When anode aluminum foil is oxidized in the electrolyte under voltage excitation, the oxide film with high permittivity is formed on the anode aluminum foil with the adsorption effect of electrons. This effect is called electric double layer. The electric double layer is formed on both sides of the anode aluminum pole. One side is positively charged while the other side is negatively charged. Thus, electric charges can be stored in the capacitor.

The working principle of MAL203038228E3 is similar to that of other aluminum electrolytic capacitors. The electrode plate of MAL203038228E3 is composed of an aluminum oxide film layer, and the anode aluminum foil is covered with an electrolyte material. Electrostatic capacitance is generated between the double layers. When charging, anode electrons are adsorbed to form a positively charged electric double layer on the anode, and electrons in the opposite direction form a negatively charged electric double layer on the cathode plate, thereby forming a electrode-catode combination.

When voltage is applied to the electrode plates of the MAL203038228E3, the capacitor can be charged. When the voltage reaches the rated working voltage, the capacitor begins to charge and store electric charges. When the capacitor circuit is closed, the electric field and current interact in the capacitor and a reverse current is generated. As the reverse current of the capacitor decreases, the electric charges stored in the capacitor More and more, and the capacitor has been charged. However, for MAL202038228E3, its maximum ripple current rate value is 2000M, and the aluminum foil of its anode adopts the capacitance of 0.47uF.

In summary, MAL203038228E3 is an aluminum electrolytic capacitor and its application field, working principle and several usage parameters are analyzed in this paper. The aluminum foil of its anode adopts the capacitance of 0.47uF, and the capacitor is mainly used in power supply, voltage stabilizing, filtering and rectifying circuits. The working principle of MAL203038228E3 is related to the electric double layer generated by voltage excitation in the oxide film of its anode aluminum foil. The capacitor can be charged with voltage, and the stored electric charge is a reverse current of the capacitor. With high ripple current rate, reliable and stable performance, MAL203038228E3 is a popular choice in the electronics industry.

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